I fitted a second (nearly identical) wheelset, and now my derailleur indexing is not working. Shifting into the last sprocket is not working, and there are a lot of gears over the range not working properly.
I am suspecting that a spacer is the culprit.
Original Hub: FH-RS470 (Cup&Cone) with a CS-M7000 (11-40T)
New Hub: WH-RX570 (Cup&Cone) with a CS-M8000 (11-40T)
Discs of both wheels fit perfectly without adjustment of the brakes. Consequently, I consider the general layout of the hubs as fine.
I also specifically bought the parts to be as identical as possible for easy swapping.
Potentially faulty Installation
However the new wheelset is considered Shimano Road, and the CS-M8000 is a MTB-cassette. It comes with a spacer (1.85mm) for Shimano Road freewheels.
Consequently, I installed the spacer first, and then the rest of the cassette.
Now, the indexing on the new set is not correct. E.g. I am unable to shift into the smallest 11T sprocket. Without the spacer left of the cassette, the cassette would sit slightly more to the left, so that "reaching" the smallest sprocket is possible.
What did I do wrong during install?
- Spacer shouldn't even be there.
- Spacer should be installed last, so that the cassette sits slightly more to the left.
What would you recommend as next steps?